Roll scraper



F 20, 19 0. D. BUCCICOQE ET AL 2,191,366

ROLL SCRAPER Filed Jan. 15, 1938 FIG. 1.

[fiver/dais: 942/0 CC/CO/VE Md Patented Feb. 20, 1940 UNITED, STATESPATENT OFFICE} ROLL SCRAPER.

'Dario Buccicone and Igillaarles M. Shank, Gary,

Application-January '15, 1938, Serial No. 185,208 Claims. (01. 15-236)This invention relates to a roll scraper and, particularly, to animproved scraper for-use in cleaning the conductor rolls in electrolyticbaths.

In applying a plating materiaL'such as tin,

5 to a continuous strip of metal it is the practice to pass the stripcontinuously through a suitable electrolytic solution. In order for theplating material to be deposited on the strip, the strip, of course, hasto serve as the cathode while passing through the solution. There areusually provided two or more conductor rolls in the solution which areconnected to negative bus ba'rs' outside the electroplating vat. Theseconductor rolls I support the metal strip being plated and,collectivelfwith the strip, form the cathode.

At times, tinning or plating material, or other foreign particles,become deposited'or lodged on the surface of the rolls which is veryundesirable in that it prevents contact between the rolls and the stripand generally results'ina poor plating job. These rolls are usually keptfree of the tinning or plating material by, means of scrapers, and it isto such a scraper that this invention relates.

I It is the general object of this invention to provide an improvedscraper for use in cleaning such conductor rolls.

It is another object of the invention to provide a scraper which will,at all times, bear re- 80 siliently against the surface of the rolls,and at the same time 'sufliciently yield,- if necessary,

. without damaging the scraper or the apparatus with whichit is used.

Various'other objects and advantages of this,

85 invention will more fully appear during the course of the followingspecification and will be particularly pointed. out in the appendedclaims.

In the accompanying drawing, we have shown one embodiment which ourinvention may assume in practice.

In the drawing: Figure 1 is a front elevation of the improved scraper ofthis inventiomshowing it in position against a roll; 1 i

Figure 2 is an end view of Figure l; and, Figure 3 is an enlargedsectional view taken on the line III-III of Figure 1. I There is shownin the drawing a conductor roll 2 rotatably, mounted in suitablebearings 3. which are mounted preferably on the frame l of the tinningor plating apparatus.

A scraper 5, preferably made from stainless steel, is positioned next tothe roll and extends substantially the length thereof, and has a sharpcutting edge 6. The scraper is preferably secured to a longitudinallyextending flanged portion I of a split or slotted resilient tubularmember 8, which is' also preferably made from stainless steel, by meansof bolts 9. The tubular member 5 8 has a smaller longitudinallyextending flanged portion Ill oppositely disposed from the flangedportion 1.

The tubular member 8- is preferably mounted so as toencircle a suitableround baror shaft-10 12, having a cross-sectional dimension relativelysmaller than the inner cross-sectional dimension of the tubular member,and is secured thereto just below the smaller flanged portion l0,preferably by means of machine screws I 3.

Preferably, the ends of the round bar or shaft l2 have flat portions M,or other means for preventing the bar from turning, which are movablymoun d in slots l5 of guide brackets l6, preferably mounted on thebearings 3, or other- 20 wise suitably mounted. There are secured to theends of the bar I2 preferably stud bolts I! for supporting the bar,which are secured by means of the adjusting nuts 18 to the extendingportions l9 carried by the brackets l6. 26

It will be understood that the tubular memher is inherently resilient inits cross-sectional direction, that is, in a plane perpendicular to theaxis thereof, and this'resiliency keeps the scraper in yieldable,contact with the roll at all times. The desired degree of resilientbearing I, force of the scraper upon the surface of the roll can bequickly and easily made by adjusting the nuts IS. The flanged portion l0acts as a stop or an abutment for the portion 20 of the lower edge J ofthe flanged portion 1' in case the scraper is forced away from the rolland limits the outward movement thereof in case an excessive amdunt offoreign substances is deposited thereon. I

As a result of the invention, it will be seen 40 that there is provideda scraper that will forcefully' bear at all times against the surface ofthe roll, removing any tin or plating deposit, or other foreignmaterials deposited thereon, thereby keeping the roll continuouslyclean. 45

I While we have, in this application, specifically shown anddescribedone embodiment which our invention may assume in practice, itwill be understood that this embodiment is merely for the purpose ofillustration and description, and 50 that various forms may be devisedwithin the scope of our invention, as defined by the appended claims.

We claim:

1. A scraper for scraping and cleaning the surface of rolls comprising alongitudinally extending split tubular member which is inherentlyresilient in a plane perpendicular to the axis thereof adapted to bearranged substantially parallel to the roll with which it is to be usedwith at least one of the edges of said slot terminating in a flangedportion, a' scraping blade mounted on said flanged portion. saidscraping blade adapted to be maintained in yieldable contact with thesurface of the roll, means for rigidly supporting said tubular memberadjacent the opposite edge of said slot, and means for limiting theoutward movement of said scraping blade away from said roll.

2. A scraper for scraping and cleaning the surface of rolls comprising alongitudinally extending split tubular member which is inherentlyresilient in a: plane perpendicular to the axis thereof adapted to bearranged substantially parallel to the roll with which it is to be usedwith the opposed edges of the slot therein terminating. in outwardlyextending flanged portions, a

. scraping blade mounted on .one of said flanged portions; said bladeadapted to be maintained in yieldable contact with the surface of theroll, the other flanged portion being adapted to act as a stop againstwhich said opposed flanged portion is adapted to abut to limit theoutward movement of said scraping blade away from the: roll, and meansfor supporting said tubular member.

3. A scraper for scraping and cleaning the surface of rolls comprising abar adapted to be arranged substantially parallel to the roll with whichit to be used,a longitudinally extending split tubular member which isinherently resilient in a plane perpendicular-to the axisthereof'arranged around said bar and securely attached thereto adjacentone of the edges of the slot therein, and a scraping blade mounted onsaid member adjacent the opposite edge of said slot,

said scraping blade adapted to be maintained in yieldable contact withthe surface of the roll.

.4. A scraper for scraping and cleaning the surface of rolls comprisinga bar adapted to be movably arranged substantially parallel to the rollwith which the scraper is to be used, a longitudinally extending splittubular member which is inherently resilient in a plane perpendicular tothe axis thereof arranged around said bar and i with at least one of theopposed edges of the slot therein terminating in an outwardly extendingflanged portion, said tubular member being securely attached to the baradjacent said flanged portion, a scraping blade mounted on said memberadjacent the opposite edge of said sl said scraping blade adapted to bemaintained n yieldable' contact with the surface of the roll, saidflanged portion being adapted to act as a stop for limiting the outwardmovement or the scraping bladeaway from'the roll.

5. A scraper for scraping and cleaning the surface of rolls comprising alongitudinally extending split tubular member which is adapted to bearranged substantially parallel to the roll with which it is to. beused, said splittubular member being of resilient material, whereby the

